Optima PEEK from Invibio

According to Invibio's website, PEEK-OPTIMA polymers feature a long history of implantation (since 1999) and successful use in regulatory approved devices.

The website goes on to say the following.

They are an industry standard in spinal fusion, and rapidly growing in other applications. PEEK-OPTIMA offers exceptional product purity, quality testing and control. What’s more, Invibio provides a "no change" supply assurance agreement, guaranteeing its long term specification and production methods.

Their proven biocompatibility and biostability is supported by US FDA Drug & Device Master files and use in thousands of regulatory approved implantable devices. In fact, no other implantable PEEK is as extensively used in US FDA, CE-marked and other regulatory body approved devices.